Vanadinite

The name of this mineral reflects its vanadium content. It is a rare secondary mineral found in the oxidized portion of lead veins. It was first discovered by Señor A.M. del Rio (1764-1849), a professor at the School of Mines of Mexico, Zimapan, before the element vanadium was discovered in 1830.

Mineral Photos courtesy of R.Weller/Cochise College